Sickle-bar



(No Modem;

. B. TURNER '2,833' SIGKLE BAR.

Paten ted No www E 5511 has "EH10-JL M UNITE STATES nrnNr rrrcn@ CHARLES BURRESS TURNER, OF YVHITE SULPHUR SPRINGS, WEST VIRGINIA.

SlCKLE-BAR?.

SPECIFICATICN forming part of Letters Patent No. 392,533?, dated November 13,1888,

Application filed May 2, 188B. Serial No.272,588. (No model.)

.To all whom it may concern.-

Be it known that l, GnAnLns Benni-lss TURNER, a citizen of the United States, residing at Vhite Sulphur Springs, in the county of Greenbrier and State of West Virginia, have invented new and useful Improvements in Sickle-Bars, of which the following is a specification.

The invention relates to improvements in cutter-bars for harvesting-machines; and it consists in the construction and novel combination of parts hereinafter described, illustrated inl the accompanying drawings; and pointed out in the appended claim.

Figure l of the drawings represents a perspective view of a portion of a cutter-bar embodying the invention. Fig. 2 is a perspective view of the keeper-bar detached. Fig. 3 is a perspective View of one of the triangular knives detached, showing the under side thereof. Fig. 4 is a perspective view of one end of the knife-bar, showing the rear side thereof and a knife. Fig. 5 is a transverse section of the knife-bar and the keeper-bar on line .fr of Fig. 1. Fig. 6 is a sectional 'view on line y g/ of Fig. 1, and Fig. 7 is a detail perspective view of a portion of the knife-bar detached.

Referring to the drawings by letter, A. designates the cutter-bar, of usual shape and attached in the usual manner to the machine to be reciprocated therefrom. The cutter-bar has in its rear side a deep longitudinal recess, a, which has a rectangular enlargement, a', at the inner end of the cutter-bar. The said enlargement is open at the top, rear, and inner end andforms the upper and lower shoulders a2- cz, near the inner end of the cutter-bar, and the recess a opens upon the rear edge of the cutter-bar. The recess extends slightly beyond the knives, but has its outer end closed.

B B are transverse notches in the upper surface of the knife-bar. The sides of these notches are dovetailed. The bottoms of the said notches are Hush with the top of the recess a. These notches are formed to receive the rectangular-shaped butts of the detachable knives, hereinafter described.

b is a longitudinal groove in the roof of the recess a and extending the entire length of said roof, and C C are knives of the usual triangular shape, provided with the rectangular butts c, dovetailed on the side edges, which fit within the notches B, and are each provided in its under surface with the transverse groove c', that registers with and completes the groove b when the knives are in place, so that a continuous groove,b c', is formed thereby.

D is the keeper-bar, iitting and sliding in the recess a, and provided on its upper surface with a longitudinal rib, d, that enters and fits in the groove b c and locks the knives in place. The said knives are thus locked vertically by the dovetailed groovesB and longitudinally by the continuous groove b c and the rib d. The keeper-bar has at its inner end the rectangular head E, provided with the shoulders e adjacent to the rib d, which rest against the shoulders a2 when the keeper-bar is in place and prevent the latter from being pushed in too far; and in order to more effectually hold the keeper-bar in its proper position I provide it with a longitudinal rib, d', on its under side, which engages a groove, h, in the base ofthe recess a, the said groove having its floor iush with the base of the enlargement a.

F is a retaining-bar in the rectangular enlargement a of the recess a, and having a vertical shoulder, f, on its rear face,that is adapted to engage a shoulder, e', on the inner face of the rectangular head E of the keeper-bar, thereby retaining the latter in place against withdrawal. G is a coiled spring seated in the enlargement a in front of the retaining-bar and forcing the same into engagement with the keeper-bar, so that the shoulder f will engage the shoulder c'. 'The parts are thus firmly bound together and operate as effectively as a solid knife-bar upon which the knives or blades are bolted, and by withdrawing the keeperbar either wholly or partially all of the knives, or any number of them, can be readily withdrawn for repairs or sharpening, as will be readily understood.

Having described my invention, I claim- The combination, with the longitudinallyrecessed cutter-bar having transverse dovetailed notches in its upper side and provided with an enlargement, a', of the knives having the rectangular butts, with transverse grooves on their under sides and dovetailed on their edges and fitting in the transverse dovetailed notches of the cutter-bar, the sliding keeper- IOO bar having the head E, 'provided with the sho1u1` der e, the retaining-bztr F, seated in said enlargement and having the shoulder f to engage o the shoulder e', and the spring Gr, bearing on CEAS' EURRESS TURNER' Witnesses:

S. I-I. TURNER,

C. RosnNQUEsT.

own I have'hereto affixed my signature in presence 0f two Witnesses.

5 the bar F to hold said shoulders in engage ment, substantially as specified.

In testimony that I claim the foregoing ns my 

